Contributions to Mineralogy and Petrology

, Volume 94, Issue 2, pp 253–261 | Cite as

Comments on “Composition and depth of origin of primary mid-ocean ridge basalts” by D.C. Presnall and J.D. Hoover

  • Don Elthon
  • D. C. Presnall
  • J. D. Hoover


Presnall and Hoover (1984), in their evaluation of the nature of primary mid-ocean ridge basalts (MORBs), concluded that earlier data suggesting many of the most primitive MORBs are derived from high-MgO (picritic) magmas are not valid. In reaching this conclusion, Presnall and Hoover (1984) ignore several important considerations regarding 1. analytical uncertainties, 2. TiO2abundances in MORBs, 3. least-squares calculations, 4. complex models of magmatic evolution and 5. enstatite saturation. I briefly discuss these points below.


Mineral Resource Complex Model Analytical Uncertainty Early Data Enstatite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Don Elthon
    • 1
    • 2
  • D. C. Presnall
    • 3
  • J. D. Hoover
    • 4
  1. 1.Department of GeosciencesUniversity of HoustonUniversity Park, HoustonUSA
  2. 2.Lunar and Planetary InstituteHoustonUSA
  3. 3.Department of GeosciencesThe University of Texas at DallasRichardsonUSA
  4. 4.Department of Geological SciencesThe University of Texas at El PasoEl PasoUSA

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